ina260-zmq-publisher/src/utils.h

#include <time.h>

#define STR(symbol) #symbol
#define STRINGIFY(symbol) STR(symbol)

#define INA260_SYSFS "/sys/kernel/ina260"
#define INA260_POWER_REGISTER "registers/power"

#define INTERVAL(timestamp,duration)\
    ((timestamp) - ((timestamp)%(duration)))

#define INTERVAL_LAST(timestamp,duration)\
    (INTERVAL(INTERVAL((timestamp),(duration))-1,(duration)))

#define TIMESTAMP() (time(NULL))